don't reall know programing but looking something to throw on my laptop???

I am looking for some programs and connectors that hook from my laptop to a car and basically "set the norms" on the computer. all help, hints, and knowledge would be appreciated.

so basically are you looking for a diagnostic program and connectors for your car? what kinda car is it?

I'm looking for one that'll go from my sable to my sentra to my 280Z to all that crap